The Bilstein B6 rear shock (part 20-070281) is a 46mm monotube damper for the rear axle of the 1990-1997 models of the Chevrolet Corvette C4. Its single-tube body is the main reason to consider it over a worn factory unit: a monotube design gives a steadier damper response when the car is driven hard on back roads, on track, or at autocross pace. The B6 line is Bilstein's performance tier, so buyers searching for a C4 Corvette rear shock upgrade, 46mm monotube Corvette shock, or 1990-1997 Corvette handling upgrade are looking at a direct replacement rather than a lowering or coilover conversion.
Fitment is where buyers should slow down. Published application notes disagree on the covered years. One lists Corvette ZR-1 applications from 1992-1995, while another lists a window of 10/91-04/97 with electronic suspension control. Confirm the exact model year, body style, and suspension equipment against the manufacturer's catalog before ordering, and check that your car matches the rear axle position this part is listed for.
